**8. Clinical and demographic data for patients before CAS**

Of the 40 patients who began the study, 36 completed the protocol. Their ages varied from 54 to 87 years (average: 72.08 years).

**9. Data from the procedures and technical considerations of digital**

Cerebral Protection in Carotid Angioplasty – Is There a Need? Advantages and Disadvantages of...

http://dx.doi.org/10.5772/57154

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**subtraction angiography and carotid angioplasty with a stent**

Degree of stenosis1 – average (variation) 76.31% (60-99%)

Ulcerated plaques – n (%) 14 (38.89%)

Contralateral carotid occlusion – n (%) 7 (17.95%)

"Broad" examn (%) 24 (66.67%)

"Brief" examn (%) 12 (33.33%)

Filter – n (%): Angioguard® 4 (11.11%)

Emboshield® 7 (19.44%)

EPI® 25 (69.44%)

Stent – n (%): Precise® 9 (25.00%)

Protégé® 5 (13.89%)

Wallstent® 22 (61.11%)

Catheterization technique – n Direct access 12

Exchange in the external carotid artery 10

Exchange in the common carotid artery 11

Triaxial 08

1 Percentage of stenosis evaluated by angiography

problems that prevented precise measurement.

prevented precise measurement.

Fluoroscopy time (minutes; average) 665; 22.93 min/CAS2

N of catheters used (n; average) 83; 2.31 cat/patient

Vessels submitted to DSA (n; average) 106; average 2.94

**Table 3.** Technical aspects and characteristics of the angiographic exams (n=36)

Contrast volume (milliliters; average) 5480 ml; 182.67 ml/CAS3

2 Regarding fluoroscopy time, only 29 procedures were recorded (n=29). In seven patients, there were technical

<sup>3</sup> For contrast volume, only 30 procedures were recorded (n=30). In six patients, there were technical problems that


**Table 1.** Distribution of demographic data for the 36 patients


**Table 2.** Distribution of risk factors (n=36 patients)
